The earlier your reserve period starts the more likely you are to be called a lot. When I was 6a RSV I broke guarantee and was used almost every day. When I moved to 6p (nap) reserve, I rarely flew. I've also been fortunate to not get the full 6 ready reserve assignments except once.

Mind you, the above applies to IAD, so the folks down in ATL probably have a different version. My classmates in DTW don't seem to fly a ton, and DFW doesn't seem to be terribly busy either from a reserve perspective. My wife and I have a place not too far from IAD, so life on reserve has hasn't been too bad from the family persective. In fact, my wife hasn't liked the months where I've had a line because I'm gone a lot more nights.

BLUF, if you come here, plan on being on reserve for at least a year. If family is important, try to live in base (but don't uproot the family to do so), it will be a lot better for you. YMMV.